We position Katie with one knee on the floor the whole time as we start the side bend. This helps focus on keeping the shoulder stabilized and finding strength in the "side panels" as she lifts her body up and works on her lateral flexion (side bend).

The arm reaching over head should stay in line with the ear and the head extends to the side instead of pitching forward. There are many elements to creating that strong lateral line that it is a good idea to break it down to feel all the elements.